Electric sparking plug.



No'. 856,602( PATENTED IUNBJu, .1907.

n. E. REED, JR.

ELECTRIC SPARKING PLUG. APPLICATION rILnn FEB. 2v. -19o?.

UNITEI) SEXTES PAIENT OFFICE.

CHARLES REED, JR.,

OF CHICAGO, ILLINOIS.

ELE-errno SPARKING PLUG..

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Be it kno'u'n that l., Cir-mins E. linnn, Jr., a citizen ot the United States, residing at Chicago, in the county Illinois, have invented in'ovement iii a new and useful Inilleelrir parkiug Plugs, of which the following is a spii'il'ication.

My invention relates to an iniprovenieiit .in the class ol electric sparkii'ig-plugs eniployed in connection with gasolei'ie-engines; and my object is to provide a novel construction ol" certain features and details of such a sparking-plug whereby the eiieiei'icj)v and reliability oi' operation. ot' the device shall b'e niateriall)Y increased hereinafti-ii' explained.

In the accompanying urawing, Figure l shows a sparkiiig-plugr of my improved coiistruction by a View' in elevation in position on the (-oinbustion-cliamoei'uitliwhieh it is used, represented in broken sectional elevag tion, Fig. 2, a View in vertical sectional elevation ol my iinpi-o,'ed sparking-plug; Fig. 3, a broken section taken at thi` line 3 on Fig. 2, and viewed in the lirection of the arrow, and Fig. a View like that presented` by Fig. i3, but showing a modiication.

The bodi' oi the dew-iwionsists ot a chambei'ed head 4 preferably` of external hexagonal shape. iiilai neck 5 vxaiid having a tiil ternaliy threaded to adapt it to screw into the head oli thik explosion-cliaml)er T ot' a gasoleiieeiigiiie olknown or any suitable construciion. Thr interior of thi'v neck forms the sparking-cliambci' S, which is in ternalljv threaded at 0 for the purpose hereinafter explained. 'llii positiv( electrodil 10 passes, as usual, through a sleeve 11 of insulating material, which is commonly porcelain, in which it is confined at its projecting ends, zis shown, against longitudinal movement. Thel sleeve pas: :s through the chainber of the head 4, in which it (iis :it a circumt't-ircntial [lange 12 provided upon it and is confined by a stiiliiiig-bcx l".

electrode is a aded to engage the ing a depending sega radial ol'wning l0 in. the pai-i'tieulais ol: (.ooli :Mid Stati* of l 'The inner en-l ot the Wire l() projects through the bond iamber S, wherein it ter- Specification of Letters Patent. Application filed February 2 l i i i l l l l i Patented June 11, 1907.

7', 1907. Serial No. 359,565.

ceive the lower electrode. In the upper side ot' the ring is formed a circumferential trough or receptacle 14* adapted to hold `iiprii'ning charge of gasolene.

It is most into the opening 16, to fastenit therein, from the outer side of the segi'i'ieiiit 15 before pro viding the thread about the ring, and to then lorin the screw-thread about the ring and in the seginent'and head therein to adapt the support for the lower electrode to be screwed into place. 'v

'ith the ring 14-in place the bearing 19 is in position to 'receive the lower electrode 2() and support it in vertical alinement `with the upper electrode to cause the tip 13 to coincide, at the center of the ring, with the tip 2l in which the electrcide 2() terminates. The electrode 20, in the form of a screw, is adapt- 'ed to be readily adjusted by turning it in its bearing on separating the plug fromr the head for regulating the space between the tips according t-o the requirement of the particular coil with which the sparking-plug is einployed.

A port 22 leads obliquely from the upper end of the sparking-'chamber 8 into a housing 23 formed with an enlargement 24 in its upper portion into which is screwed an annular plug 25 forming an inlet 26 and confining against a spiral spring 2S in the housing a ball-valve 27 which normally maintains closed the inlet 26.

The electrical connection of the sparkingelectrodes with a generator and a Contact making and breaking device included in the connection, are conventionally represented in Fig. 1.

By the construction thus shown and do? scribed, the open-base sparking-chamber is provided entirely within the plug With the terminals in Vertical alinement at the c enter of the open base, whereby when ignition lakes place the resultant explosion carries all iinburnt carbon downward into the cylinder T and thus prevents, as the primary advantage of my improvement, the ,accumulation ot" soot in the sparking-chamber. .llie thoroughness ot evacuation ot the sparkinga head 17 on a noek 1N )caring 1S) adapted to icf chamber of' iiiiburnt gas is enhanced, moreover, by theI provision ol the v'alved port 22, since each intake-stroke of the piston of the en ie opens the ball-valve against tliiresistance ol its sustaii'iiiig spring sullf-iwntly practical to driiiethe 'head 17l to draw air into the sparking-chambei' which cleans the latter of all dead gas.

Furtherfor priming the sparking-cl'iamber, through the valve-housing and port, with gasolene,

which is received and retained for evaporation in the trough 14 3 and gasolene may also r a bearing supported in said opening, and a lower electrode supported in said bearingl in vertical alinement with the upper electrode. 3. In a sparking-plug, the combination of a body having a tubular neck forming the sparking-chamber, an upper electrode proj ecting into said chamber, a ring having a dey pending segment containing an opening with be readily sprayed through the port into the sparkingchamber for cleaning, when re- Y quired The modified construction represented in Fig. 4 is the simpler and affords the advanw tages of the construction shown in Figs. i

and 3. In the modification the ring, shown at 142 and containing a c-,ircumlerential trough 14 like that in the ring 1-1, is integral with-the wall of the neck 5 and thi` tip 13 of the wire 1() coincides with the center of the ring.

The lower electrode 201, with its tip 2P,A is substantially like the electrode 20, but

screws into and is adjustable in a bearing 19 in the wall of the neck, below the external screw-thread thereon, where the lscrew is countersuiik into the wall, as represented, to prevent it from obstructing the insertion of the neck into the head 6. The electrode 20 thus occupies a horizontal position and alines at its inner end with the vertical electrode 10.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a sparking-plug, the combination ol a body having a tubular neck forming the sparking-chamber, an upper electrode proiecting centrally into said chamber, a ring forming the open base of said chamber, a, bearing supported on said ring to aline vertically with said upper electrode, and a lower electrode supported in said bearing.

2. In a sparking-plug, the combination ol a body having a tubular neck forming the sparking-chambei', an upper electrode projecting into said chamber, a. ring forming the open base of said chamber and having a depending segment provided with an opening,

- housing a head confined in the opening, the ring, seg ment and head being threaded and screwed into said neck to forni the open. base thereof', a neck extending from said head and terminating in a bearingr near the center of said ring, and a lower electrode supported in said bearing in vertical alineinent with the upper electrode.

4. In a sparking-plug, the combination oi" a body having a tubular neck forming the sparking-chamber, an upper electrode projecting into said chamber, an annular sup port for a lower' electrode forming the open base of said chamber, a lower electrode on. said support in vertical alinement witlrsaid upper electrode, and a valved port in the body lea'diiig t-o said chamber.

5. In a sparking-plug, the combination of a body havingI a tubular neck forming the sparking-chaiiiber, 'an upper electrode projecting into said chamber, a ring forming the open base. of said chamber and having a trough in its upper side, a lower electrode supported in said neck, and a valved port in the body leading to said chamber.

6. In a sparking-plug, the combination of a body having a tubular neck forming the sparking-chamber, an upper electrode projecting into said chamber, a valve-housing in the body having an opening, a springpressed valve iii the housing controlling said opening therein, a port leading from said into the sparking-chamber, a ring forming the open base of said chamber, and a lower electrode supported in said neck.

CHARLES E. REED, Jia. In presence of- J. l'I. LANnEs, Ii. A. SciiAEFEii. 

